Cov yam ntxwv ntawm daim ntawv thov ntawm epoxy yeeb nkab

Cov yam ntxwv ntawm daim ntawv thov ntawm epoxy yeeb nkab:

1. Ntau hom ntawv. Ntau yam ntawm cov resins, curing agents, thiab modifier systems muaj nyob rau kom haum rau txhua daim ntawv thov daim ntawv yuav tsum tau, xws li los ntawm tsawg viscosities mus rau siab melting point solids.

2. Yooj yim kho. Siv ntau yam tshuaj tua kab mob, epoxy resin tshuab tuaj yeem kho tau hauv qhov kub ntawm 0 txog 180 ° C.

3. Muaj zog adhesion. Lub hav zoov ntawm polar hydroxyl thiab ether bonds muaj nyob rau hauv cov saw molecular ntawm epoxy resin [1] ua rau nws muaj adhesion siab rau ntau yam khoom. Epoxy resins muaj tsawg shrinkage thaum kho thiab ua kom muaj kev ntxhov siab me ntsis, uas tseem ua rau kom muaj zog adhesion.

4. Tsawg shrinkage. Cov tshuaj tiv thaiv ntawm epoxy resin thiab tus neeg sawv cev kho siv yog ua los ntawm cov tshuaj tiv thaiv ncaj qha los yog lub nplhaib qhib polymerization ntawm epoxy pawg nyob rau hauv cov molecule resin, yam tsis tso dej los yog lwm yam khoom los ntawm cov khoom tsis zoo. Lawv pom qhov qis qis heev (tsawg dua 2%) thaum kho dua piv rau unsaturated polyester resins thiab phenolic resins.

5. Cov khoom siv dag zog. Cov txheej txheem kho epoxy resin muaj cov cuab yeej zoo heev.